Some photos I took a couple of weeks ago at the URHS open house in Boonton, NJ a couple of weeks ago...
The GG1s, in ascending size, are a Kato N scale, MTH HO scale, 3rd Rail O scale, and Pennsy Real scale. I had wanted to get my USA Trains G scale in, but didn't want to carry it.
The DLW Heritage model is the MTH one.
There are captions with the photos, not sure if they'll show up.
Enjoy.